Last night at the Fox Fall Eco Casino Party at The Bookbindery in Culver City, C.A., Glee stars were shining brightly! Indicating they’re already back on set and filming the fourth episode, Cory Monteith, Chris Colfer and Amber Riley dished about initiation rituals for new stars from The Glee Project, pranks on set and Gwyneth Paltrow’s return to the hit show!

Cory told reporters that returning to set after the summer hiatus is kind of like going back to summer camp. “It sort of is,” he explained. “It’s like you spent a month and a half away from your family and then, all of sudden, you come back to them again. Its back to work, but I missed them.”

In case you’re wondering if there’s an initiation process for the new stars from The Glee Project, the answer is a resounding, “Yes!” He told OK! “We have a hazing ritual that we like. It’s kind of like being tarred and feathered, but it involves a steep set of stairs and like sacks of flour. I can’t tell you exactly what happened, but everybody who is new that comes on the show, that’s what happens.”

Chris added, “I hope that we can haze the hell of them! I think that one of them is younger than me so I am not the baby anymore. But, I am into the mental games. Mental games! I am going to pretend that I have like the worst case of bipolar disorder and they aren’t going to know how to handle me. It’s going to be great.”

Although Chris’ plan sounds pre-meditated, Amber has a different strategy. She told OK!, “Here is the thing…I am the prankster on the set so I have not had time to sit down and think about it yet! I have to know their personalities before I really get them. You have to know their fears.”

Amber admitted to OK! some of the pranks she’s done have involved fires such as “some smoke and a small fire.” In addition, there were “some love notes that were not real.”

Pranks aside, Amber revealed that yes, Gwyneth will return to Glee! “I am sure that she will come back this year. Holly Holiday – that chapter kind of didn’t close so I am sure that she is going to come back. She’s great!”